《华电技术》征稿启事

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2017-02-01 Intelligent power plant integrated big data platform key technology and application analysis

ZHANG Fan(Hubei Xisaishan Power Plant Company Limited, Huangshi 435000, China)

Abstract:Intelligent power plant construction is the development direction of electric power industry informatization, establish large data integration platform for power plants to produce all kinds of data processing is a key step of constructing power plants with wisdom. Per the characteristics of the electric power industry, analyze the data source and data structures, designed the special data platform architecture to deal with data and calculation of deep mining gives accurate decision support information. The platform in a coal-fired power plant actual operation, the operation results show that the platform can handle power plant data and it is concluded that the correct information.

coal-fired power plant; intelligent power plant; big data; data cleaning; intelligent warning

2017-02-04 OSGi & RCP based pluggable intelligent substation integrated software platform framework

ZHANG Xiaorui, JIANG Yanjun, MIN Yanrong, FU Hao, DONG Huaipu(South China Automation Company Limited, Nanjing 211153, China)

Abstract:Based on the problems of intelligent substation secondary equipment configuration, maintenance and control system, combined with the philosophy of software engineering, an integrated multi-task software platform based on OSGi&RCP was indicated. The framework is based on Java dynamic module OSGi and Eclipse RCP. Combining service oriented communication mechanism and the plugin interface and implementation phase separation in the package to minimize dependence on design method, has realized the system users, business oriented loosely-coupled integration, has solved the traditional software architecture in the development, deployment, and engineering application on cycle is long, the defects of lack of flexibility, achieve the effect of modularity “plug-in”.The feasibility and superiority was approved by application.

Keywords:intelligent substation; OSGi；Eclipse RCP; business modularity; plug and play

2017-02-08 Application of maxDNA-based PROFIBUS site busbar in power plant chemical water treatment system

LIU Zhou, CHEN Zijing(State Power Automation Meizhuo Control System Company Limited, Nanjing 210032, China)

Abstract:To build digital power plant, Huadian International Power Corporation Fengjie Power Plant 600 MW ultra-critical unit chemical water treatment system realized site busbar. Combined PROFIBUS site busbar technology and maxDNA distributed control system, proper hardware and control algorithm was provided based on the characteristics of chemical water treatment system. Study result indicated that this system satisfied control requirement. The operation is safe and reliable, the possibility is proved.

Keywords:site busbar; PROFIBUS; maxDNA; chemical water treatment system

2017-02-12 Internet-of-things-based high voltage vacuum breaker intelligent digital monitoring system analysis

MA Xiaojuan, PAN Yapei, YANG Zhao(Henan Senyuan Electrical Company Limited, Changge 461500, China)

Abstract:An Internet-of-things-based high voltage vacuum breaker intelligent digital monitoring system was indicated. The vacuum circuit breaker is based on DSP data acquisition processing center, by using the hall current sensor, pressure sensor and displacement sensor mechanical properties such as sensors and the wireless temperature measurement module for high voltage vacuum circuit breaker mechanical finish data collection and processing, as well as to realize the local wireless communication mode will be available after processing the data information sent to the vacuum circuit breaker intelligent digital monitoring center. The core of the intelligent digital monitoring center is based on VB platform. Take Access as backend database management system, used to store kinds of monitoring information, and to facilitate monitoring personnel to query the operational parameters of high voltage vacuum circuit breaker display and fault analysis. Field test prove that this system has higher working stability and accuracy.

Keywords:substation; high voltage vacuum breaker; online monitoring device; intelligent digital monitoring system; Internet of things; DSP; VB; access; mechanical feature

2017-02-16 Physical analysis of reactor different refueling methods based on MCNP pressurized water reactor

XU Qi, ZHANG Gong(North China University of Water Resources and Electric Power School of Electric Power, Zhengzhou 450045, China)

Abstract:Refueling method is essential for the economy and safety of reactor. By Monte Carlo method, physical model of miniature reactor was built by MCNP software. Accurate physical calculating model of fuel, coolant, reactor core and reflector were built accordingly. The effective value-added of refueling after the core factor keff, neutron energy distribution and neutron flux density radial distribution of physical quantity calculation, analysis and calculation at the same time focus on core power density distribution. Draw up the core power density distribution of three-dimensional figure, summarizes the power density distribution. By a series physical calculation and summarization of data, the reference for reactor core improvement and effect of refueling method for reactor core power was indicated.

Keywords:miniature reactor; refueling; Monte Carlo method; physical analysis; power calculation

2017-02-20 Design of an automatic cable management system for power distribution network and its realization

LI Dejun1, LIANG Hongquan2(1.Nanjing SAC Automation Company Limited, Nanjing 210000, China; 2.Baoji Power Supply Branch Company, Shaanxi Regional Electric Power Group Company Limited, Baoji 721000, China)

Abstract:This paper introduced the importance of a cable management system in power distribution network, and detailed the function requirements of cable account maintenance, auxiliary facility account maintenance, intelligent operation and intelligent overhaul based on the automatic cable management system for power distribution network according to the needs of distribution automation. At last, it designed and realized a cable management system based on the Java EE (Java platform, enterprise edition) technology.

Keywords:cable management; account maintenance; Java EE

2017-02-23 Power plant electrical system installation tender division based on specialized technology

ZHANG Enke(Zhejiang Electric Power Construction Company Limited, Ningbo 315012, China)

Abstract:To avoid disputation while coal-fired power plant electrical system installation, this paper introduced a two-unit newly-build project that detailed divided electrical installation technical labor, and increased the overall efficiency of different installation teams. This could be referred by other power industry construction and management.

Keywords:power plant construction; electrical system; installation section; technical division of labor

2017-02-26 Two-generator parallel-running redundant uninterrupted power supply parallel operation analysis

YANG Junfeng(Liaoning Huadian Tieling Power Plant Limited, Tieling 112000, China)

Abstract:Based on two-generator parallel-running redundant uninterrupted power supply (UPS)structure applied in large thermal power plant is more, higher reliability. Due to the feature of its output in parallel, when the fault after the machine maintenance and recovery, adopt different ways of operation on the quality of the UPS power bus. In a power plant in weaver UPS bus power fluctuations in the process of operation caused by the air preheater, tripping events through PMDR-200 portable failure data recorder for a variety of weaver has the effect of different analysis, comparison, find out the optimum operation scheme, improved the level of operational personnel.

Keywords:two-generator parallel-running; uninterrupted power supply(UPS); air preheater; parallel operation; magnetizing inrush current; switch on

2017-02-31 Experimental study on scale and corrosion inhibitor for industrial circulating cooling water

PAN Lina(Huadian Laizhou Power Generation Company Limited, Laizhou 261441, China)

Abstract:Power plant widely adopted heat exchanger (or water cooler) to cool water, steam, oil and gas indirectly. To solve the problem of scaling and corrosion, small scale and corrosion inhibitor was added. Cooling water working condition was ensured. The objective to long-term, high efficiency, and reduce water and energy consumption was fulfilled.

Keywords:industrial circulating cooling water; scale and corrosion inhibitor; corrosion efficiency

2017-02-35 Selection of large capacity step-up transformer in power plant

JU Zhenghao(Shenhua Guoshen Group Technology Research Institute, Xi’an 710065, China)

Abstract:This paper introduced the selection basis of large capacity step-up transformer. The comparison of three phase compacted transformer and three single phase transformers was based on negative-sequence current, operation reliability, operation loss, price, transportation and other aspects. To determine the short circuit impedance, unit operation stability and voltage adjusting rate were considered as well as short circuit current.

Keywords:large capacity step-up transformer; capacity; negative-sequence current; reliability; loss; short circuit impedance

2017-02-38 Thermal power plant buried pipeline corrosion evaluation and repairing techniques discuss

LI Xiaohui1, GUO Yanjun1, TIAN Feng2, LIANG Hui2, CUI Shaobo2(1.Huadian Electric Power Research Institute, Hangzhou 310018, China; 2.Huadian Zouxian Power Plant, Zoucheng 273522, China)

Abstract:Took a power plant’s buried water supply pipeline as example, by study on overall operation condition, corrosive and leakage area excavation, water quality monitoring, soil test, corrosion measurement, pipe thickness measurement, corrosion potential test and other methods, the corrosion condition of water supply pipe was evaluated. Repairing plan for the buried pipe was indicated.

Keywords:buried water supply pipeline; corrosion; pipe ground potential measuring

2017-02-41 Operation mode and energy saving benefit analysis of circulating water pump for 1 050 MW ultra-supercritical unit

XIA Jinling, SONG Jihu, WU Ludong(Huadian Laizhou Power Generation Company Limited, Laizhou 261441, China)

Abstract:Take circulating water pump as study object, the mathematical model of unit net coal consumption variation and profit variation was build based on SPSS software. The critical point of unit net coal consumption variation and profit variation of the third circulating pump was analyzed. This could be referred to determine the optical operation mode.

Keywords:circulating water system; SPSS software; net coal consumption; profit

2017-02-45 Exploration and practice of lean management of coal blending ratio

CHEN Wei(Huadian Laizhou Power Generation Company Limited, Laizhou 261441, China)

Abstract:To improve work efficiency, coal blending formula was input into Excel, and produced multiple blending plans. And then the chart of coal blending adaptability plan and coal blending map was draw. User can macroscopically determine the index and adaptability of two kinds of coal after blended by using these three charts. Blending plan could be compared and preferred.

Keywords:coal as fired；blending；adaptability；Excel

2017-02-48 Same side high and middle pressure regulating valve shutdown instantly cause analysis and treatment

LIU Weixing (Guangdong Meizhou Dabu Power Plant, Dabu 514000, China)

Abstract:A thermal power plant No.2 unit high pressure regulating valve location feedback signal fluctuated, and caused fluctuation of steam turbine digital electro-hydraulic control system (DEH). By site check and analyze, the cause of this incident was determined. The potential safety hazard of regulating valve shutdown instantly was eliminated. Which could be referred for equipment installation and maintenance.

Keywords:thermal power plant; digital electro-hydraulic control system(DEH); feedback signal; regulating valve; fault analysis

2017-02-51 Logical optimization of an alternating auxiliary lubricating oil pump for PG917E gas turbine

NIE Yiping1, CHENG Liang2(1.Zheneng Jinhua Gas Turbine Power Generation Company Limited, Jinhua 321000, China; 2.Hangzhou Huadian Thermal Power Company Limited, Hangzhou 310018, China)

Abstract:The lubricating oil system is normal or not, will directly affect the safe operation of gas turbine. Especially when the main oil pump gradually exits after the splitting revolving speed drops, the timely startup of an alternating auxiliary lubricating oil pump has great significance for the safe operation of unit. When the unit is operating, if an operating or standby valve of regulator station has fault and could not be opened, the startup of auxiliary lubricating oil pump under 50% revolving speed has some hidden troubles. After optimization of modifying the startup logic considering all possible conditions, the tile burning failure of generator is prevented, which ensures the safety of operating equipment.

Keywords:gas turbine; lubricating oil system; auxiliary oil pump; logical optimization

2017-02-53 Noise reduction analysis of a mechanical draft cooling tower

FANG Jianyong(Hangzhou Huadian Xiasha Thermal Power Company Limited, Hangzhou 310018, China)

Abstract:Owing to space limitation, a mechanical draft cooling tower is adopted for a certain newly built gas turbine thermal power plant in Zhejiang. Furthermore, because that the project is located in urban area, the noise reduction requirement is higher, and the noise environment is needed to reach Ⅱ class standard. In the early technology selection period of this project, some technical measures are considered to reduce the body noise of a mechanical draft cooling tower to a minimum, with some noise reduction measures for air inlet and outlet are also adopted in later period, the whole noise control of the cooling tower is successfully to meet the requirement of environmental Ⅱ class standard.

Keywords:thermal power plant; cooling tower; noise reduction measure

2017-02-55 Optimization and transformation of the 10 kV backup automatic switch system of Liyuan Hydraulic Power Plant

LI Xianqi(Liyuan Power Generation Branch Company, Lijiang 674100, China)

Abstract:The auxiliary power is the most important load for a hydraulic power plant, and its reliability determines the safety operation of power plant to a great extent. Through analyzing the principle of operating auxiliary power PLC backup automatic switch system of Liyuan Hydraulic Power Plant, this paper found out the hidden troubles that exists in the 10 kV backup automatic switch system and proposed corresponding technical improvement schemes, which makes the auxiliary power system more safe, stable and reliable.

Keywords:auxiliary power; backup automatic switch; PLC; reliability

2017-02-57 A 600 MW subcritical unit energy saving economy raising approach study

DU Yuchao(Zhanjiang Zhongyue Energy Company Limited, Zhanjiang 524099, China)

Abstract:Based on the requirement ofTransformationandUpgradingofCoalforEnergyConservationandEmissionsReductionPlanofAction2014to2020, the energy-consumption index of Zhanjiang Zhongyue Energy Company Limited’s 600 MW unite was too high. After studying on steam turbine path flow, boiler heating surface, outside steam cooler, vacuum system, thermodynamic system, air preheater, circulating pump and theoretical calculation, net coal consumption would be lowered to 19 g/(kW·h).This paper could be referred by similar unit and project.

Keywords:coal-fired unit; comprehensive effect raising; economy；energy conservation

2017-02-60 Improvement measures study on the cooling of postweld heat treatment of large diameter and thick wall 9% Cr steel pipe

LIU Baoshuang, CHEN Chunhui(China Energy Engineering Group Zhejiang Thermal Power Construction Company Limited, Hangzhou 310016, China)

Abstract:This paper introduced the common problems in the cooling process of postweld heat treatment of large diameter and thick wall 9% Cr steel pipe, analyzed its reasons, proposed some improvement measures, and conducted a contrast test. Through changing cladding method of thermal insulating cotton, the problems of lower cooling rate and curve bifurcation at the later cooling period of postweld heat treatment of large diameter and thick wall 9% Cr steel pipe are effectively solved, which improves the quality and efficiency of postweld heat treatment.

Keywords:thermal power; 9% Cr steel; postweld heat treatment; high temperature tempering brittleness

2017-02-62 Feasibility analysis of heat pump system using low-temperature surface water

ZHU Kongyang(Guangdong Power Transmission and Transformation Engineering Company, Guangzhou 510160, China)

Abstract:To save energy and reduce coal and gas consumption, and reduce emission, the possibility of low-temperature surface water heat pump system was studied. Constrained by the temperature of winter surface water, closed-type water heat pump system was adopted. The system adopts the single stage and double stage coupling operation, after calculated and analyzed system heating efficiency ratio and indicated that the winter water temperature in extreme cases provided 45.0 ℃ water heat pump, heating system efficiency were greater than 2.6, proved the feasibility of using the low temperature water heating in winter. To single stage and double stage coupling heat pump system at the same time heat pump heating efficiency than the contrast (investigate), determines the low temperature water source heat pump system respectively with 45.0 ℃ and 50.0 ℃ hot water of single and double switching condition water temperature of 5.0 ℃ and 8.0 ℃.

Keywords:water heat pump; single-double-stage switch; heating efficiency ratio; closed-type system

2017-02-65 Application of flue gas ultra-clean emissions technology in coal-fired power unit

WANG Jihua(China Huadian Engineering Corporation Limited, Beijing 100160, China)

Abstract:In order to solve the increasingly serious atmospheric pollution, much stricter atmospheric pollutants emission standard for thermal power industry is issued. Through some transformations on desulfurization, denitrification and dedusting systems for coal-fired power units, the emissions of atmospheric pollutants could meet the atmospheric standard. This paper briefly introduced the flue gas ultra-clean emissions technology in domestic coal-fired power plants, and taking the Yangzhou Power Plant as an example, it detailed the transformations on technological process and control scheme, etc.

Keywords:flue gas; ultra-clean emissions; desulfurization; denitrification; dedusting

2017-02-68 Application of gas-gas heater in a selective catalytic reduction denitrification urea hydrolytic system for a certain 150 MW power unit

SUN Zuyi1, ZHANG Huadong2, LEI Siyuan3, MA Yuedong1,WANG Lele3, KONG Fanhai2(1.Huaneng Yantai Power Plant, Yantai 264002, China; 2.Huaneng Shandong Power Generation Company Limited, Jinan 250014, China; 3.Suzhou Branch Company of Xi’an Thermal Power Research Institute Company Limited, Suzhou 215153, China)

Abstract:For the flue gas selective catalytic reduction (SCR) denitrification urea hydrolytic system, the mixed gas at its outlet should have a certain degree of superheat. In order to meet that requirement, this paper introduced a method of using a gas-gas heater (GGH) to heat the cold dilute wind and the GGH device has internal flue at outlet of denitrification system, which has some advantages of simple system, small investment, convenient maintenance and obvious energy saving effect. The practical operation effect meets the expected performance requirement and provides reference for similar energy saving transformation project, which has good popularization value.

Keywords:selective catalytic reduction denitrification; urea hydrolysis; gas-gas heater

2017-02-71 Study on flue gas desulfurization scheme of Rovinari Coal-fired Power Plant in Romania

YAN Lu, ZHOU Zhengyi(China Huadian Engineering Company Limited, Beijing 100160, China)

Abstract:To ensure the SO2emission satisfied the EU environmental standards, authors compared different desulfurization solutions for Romania Rovinari Coal-fired Power Plant. After comparing with circulated fluid bed semi-try method, limestone-gypsum wet method was decided. This satisfied the EU environmental requirements and lowered initial investment.

Keywords:coal-fired power plant; EU environmental standards; limestone-gypsum wet desulfurization; circulated fluid bed semi-try desulfurization

2017-02-73 Waste heat boiler exhaust air to cool gas turbine intake air study

CHEN Zhifeng(Huadian Distributed Power Engineering Company Limited, Beijing 100070, China)

Abstract:Generating efficiency of gas turbine is closely relate to intake air temperature. With air temperature increased, the density of air and the quantity of air flow through gas turbine decreased. And gas turbine generating efficiency decreased. Coolant and air flow inside and outside of cooler. The heat exchange between them realized air cooling. This paper took GE LM2500, remade from airplane engine, as research target, actual cooling result of applying combined cycle waste heat system to cooling gas turbine intake air was discussed.

Keywords:gas turbine; generating efficiency; air intake cooling; waste heat

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